OER Parts offers a wide selection of Body Components for your 1977 GMC C15. OER Parts offers 1977 GMC C15 Tail Gate Parts, 1977 GMC C15 Handles & Latches, 1977 GMC C15 Hinges & Chains, 1977 GMC C15 Tail Gates, 1977 GMC C15 Tailgate Handle, and 1977 GMC C15 Power Tailgate Lock and 1977 GMC C15 Liftgate Gas Strut.